Thrashing machine



Aug. 14, 1923.

W. F. BROWN THRASHING MACHINE 1921 2 Sheets-Sheet 1 finned Hot akbzacq Filed March 25 hololer,

Patented Aug. 14, 1923.

9 ATE? T F F'l C.

genom iiicbfin noofi, AnK-Aiislis, AssIGNoB or ONE-HALF To "JOSEPH L. LYONS, o'F ITTnn Rock, ABRAN'SAQ A ipliealt'io'hffild March-25,- 1921. serial 'No. 455,662.

Little leo'ek, in "the county :ofi Pulaski and sm le of Arkzins'as; have invented V certziin new end :usei'ful Improvements in a Tllfiishing zMaehin of which the following is re s zieeilieition;

lThisTin-vention :reletes'to' a thrashing machine ancl"hisiforfitsprincipal'ohjectato obtain a niorethdroughseparationbf the g lain from the straw "nn cli espeeielly from. Wet

straw. Elhe thieshin'g machine is also es semi-1y adapted fio heausecl ifoi" Him-shins;

ontli'eni causing elmi iaml fine fresh for col-lefetjin most of bhe openings in the gr-ate under :the fibres-hing 'e'ylinl'rs ro'f threshing machines now commonly in use ie-ncl zit :i-s an In the aimi g-:

tion fia'lien' 'fihrough' the thrashing "Inaehine,-

V Figure 2 is e t op plane-H116 grste me'ohu'secl'dn cenneetien with lihe Concave Figrife 3 is-egsee t isnt: n entne line T 11B. 2 lookiligin the de ect-i031 been;

Figeie '5 is fragmentary plan View objeet of thi's invention ice rebfiie'te this hin' be hereinafter hilly nesdribed and claimed:

Figure 6 is a sectional View through fihe "I'ndtlle taken on theiline 6 6 oi Figure 5,

rFigure 7 is a transvefse sectionalview taken through the Radclle, and

Figure :8 is a section lt'ekenon tl1eline8-8 of' Fzgiil 'efi looking :in :the direction of the Ell'l-OW.

Re'feiThig to the 'clrewin'gs 'in detail it will be seen 'thzit l0 clesign1tes the frame which nhy :be of {any .pieferrecl construction and 15 mounted upon file Wheels :11 in any preferred manner. Situated inthe forward end of theimme 10is the thrashing Cylinder '12 of zany convenfiiona l const'fuction :pfovideel with a pluielifiy of biis having sh-ztitpenecl teeth- 18. A concave holder 14 is situated directly under the eyTli-niler 12 and is of the usual 'clesign being :aljustzlhle 2211; the :fi 'ont &I1liELI'fi1i'.OElri0 Tale anclslowefit. 'IIiL Inecliatelfy back "of the center in 'the oncave holder 14: there is -s'ittiatec l a ig i'ate incliatecl genefally by *fChe ninnel'al 15 :i-ncl the specific construction 'of'bhis grate will :be 'liereina'fter alone fully clesoiihed.

A Wing beater 16 is rotiita'bly mounted in the frame 10 'totthe Tear of he cylinder 12 and abovesies' 'eentei' "einclwill meme 111 a like :dii ection' with the cylinder 12. As shown'in Figure 1 of theidrawlng'this cylincl'er '12 2Ind tl1e ibe&ter '16 Will rotate "in a cdnnter-clo'ckw ise direction.- A 'raclrlle '17 has itsforwarcl encl'situnte'elblow thebee-ter l6 and extenclsnpwzirclly "so thatits-upper end will tesminzite on epproxiniacely Hie same level with tlleXbeater l6 zinclso as to be t'o tlieiea-rftheieof; The specific construction of ifi his raclclle llwiiill be hereinafter Elesefibed. Thisrzxcldle 17 conveys the straw up to :a "slow speed :cylincler '18 'Wh-ieh is Totaifiehly mounted in .lih e "frame" "as to he sitneteial a lifit le abqverthe iippei end ofith'e mlclle "1-7 8111a :to the wear thereof; This slow :speeizl oylin'der '18 rotates as shown "in Figure "1 ina eloelgwi se' direction and will lift the straw fr m ffih'e' middle and *eerryii; inte fa' high speed cylinder 19 which is smu dttl n fihe'rear 1nd 'eb'ove'thecylintlef 18.

in Figure 1 in a counterclockwise direction. The teeth in cylinders 18 and 1.9 are round and those of cylinder 18 are shorter than those of cylinder 19. The teeth being round do not cut the straw as much as the teeth number 13 but will rethrash any grain left in the straw after passing cylinder number 12 and spread the straw over the racks hereinafter mentioned evenly. A beater 21 is rotatably mounted in the frame 10 to the rear of andon the same level with the cylinder 19 so as to rotate in a like direction therewith. A straw rack 20 is situated be low the cylinders 18 and 19 and the beater 21 and is oscillated by means of the rod 22 actuated by the cam 23 or any other suitable manner. A second straw rack 24 is situated to the rear of the rack 20 and is also adapted to oscillate in the frame 10 by any preferred means and these racks 20 and 24 will be of conventional and well known construction.

At the front of the framelO starting under cylinder number 12 and extending the entirelength of the frame is a chaffer 25. Immediately below the ehaffer 25 is positioned a grain pan 26 which also extends from the front end of the frame back to thefront of a grain shoe 2?. Fastened on the rear end of the grain pan 26 is a second or auxiliary chafl'er 28 which extends over the grain shoe 27. This grain shoe 27 is a cleaning shoe of conventional constructlon. Under the rear end of'the grain cleaning shoe there is "situated-a tailing auger 29 which will also be of conventional construction. Under the front of the grain cleaning shoe 27 there is situated a grain auger 30 and a draft or cleaning fan 31 of the rotary type is situated forwardly of the grain auger 30 so as to deliver its current of air rearwardly.

By referring to Figures 2, 3 and 4 of the drawing the detailed construction .of the grate used in connection with the concave holder 14 will be seen. This grate 15 come prises a frame of rectangular construction having a forward bar 33 and side bars 34 extending at right angles from its ends. A rear bar 35 is attached to the side bars 34 and it will be noted that this rear bar 35 is in a different plane from the front bar 33 and side bars 34. These side bars 34 are curved asshown in Figure 4 of the. drawing so as to be concentric with the concave holder 14. A plurality of openingsare provided in the front'bar 33 for receiving the shanks of the grate bars 36. The grate bars have their body portions curved concentric with the concave holder 14 and their intermediate portions rest on the rear bar 35 and arei preferably electrically welded thereto. Rivets 37 are driven or inserted through the bar 33 and through the shanks of the grate bars 36. It will be noted that this grate has no cross members to collect wet trash or mud, the force of the straw keeping clean, therefore it will allow the greater part of the grain to pass therethrough onto the grain pan before it falls upon the straw shaft 39. Each of these shafts'38 and 39 are provided at their ends with sprocket wheels 40 over which pass chains 41. Supporting beams 42 which will be suitably at tached to the frame 10 are arranged on each side of the raddle and cross rods 43 extend transversely therebetween so as to pass through bosses 44 formed integral with the grate bars 45. These grate bars 45 are Suitably spaced from each other by means of collars 46 and'are formed at their ends with.

hooks 47 which extend around the shafts 38 and 39. There will be enough of these grate bars used to fill the space between the supporting beams 42 and the number thereof will naturally vary in the different sized machines. The spacingcan be changed to suit conditions by changing the size or number of the spacing collars 46. Slats 48 extend between'the chains 41 and are attached thereto in any suitable manner. A plurality of holders 49 are suitably attached to, the slats 48 and are formed with spaced aligned apertured ears 50. 'Grate cleaning fingers 51 are pivotally mounted intermediate their ends between theears by means of pins 52. These fingers extend down between the grate bars 45 and are formed of flexible material. On the upward travel of the raddle the fingers extend down and as the raddle slats pass the sprocket wheels 40 and start on the downward travel these fingers .will fold down on the under side of theraddle slats.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the thrashin'g machine will be readily understood without a more extended explanation. As numerous changes in form, proportion, and in the minor details'of construction may be re sorted to without departing from the spirit of this invention, I do not wish. to be limited to the construction herein shown and described other than as claimed.

Having thus described my invention what I claim as new is A grate mechanism-of the class described including a substantially rectangular frame comprising a front bar provided with aseries of openings extending from its rear side and a second series of openings extending from its upper side,side bars extending rearwardly from the front bar, a rear bar attached to the side bars so as to offset therefrom. a plurality of grate bars having reduced ends extending into the first series of openings In testimony whereof I afiix my signature in the front bar and having their intermediin presence of two Witnesses. ate portions resting on the rear bar, and

rivets in the second series of openings and WILLIAM F. BROWN. 5 passing through the reduced ends of the Witnesses:

grate bars so as to securely fast-en them to SAMUEL R. LYONS,

the front bar. T. E. Bronson. 

